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2 years ago

How could you calculate 23 x 21 if the 2 button on your calculator is broken?

Mathematics

2 answers:

natali 33 [55]2 years ago

7 0

Step-by-step explanation:

(30-7)*(30-9) I think this may be an answer

Andru [333]2 years ago

5 0

Answer:

Well you could get use g o o g l e s calculator or write it out.

Step-by-step explanation:

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What is the sum of a 7-term geometric series if the first term is -6, the last term is -24,576, and the common ratio is 4?

Zanzabum

<h3><u>Answer:</u></h3>

Hence, the sum of a 7-term geometric series is:

-32766.

<h3><u>Step-by-step explanation:</u></h3>

We have to find the sum of a 7-term geometric series (i.e. n=7) if the first term(a) is -6, the last term is -24,576, and the common ratio(r) is 4.

We know that the sum of the 7-term geometric series is given as:

$S_n=a\times (\dfrac{r^n-1}{r-1})$

On putting the value of a,n and r in the given formula we have:

$S_7=(-6)\times (\dfrac{4^7-1}{4-1})\\\\\\S_7=-32766$

Hence, the sum of a 7-term geometric series is:

-32766.

3 0

3 years ago

Read 2 more answers

Compared to a model of 9/12 , a model of 3/4 will show -------------(A)3 Times as many B)1/3 times as many D)The same number of)

aleksandrvk [35]

9514 1404 393

Answer:

B, B

Step-by-step explanation:

A model of 9/12 will have 12 parts, 9 of which are shaded.

A model of 3/4 will have 4 parts (1/3 as many), 3 of which are shaded. Each part of this model will correspond to 3 parts of the 9/12 model. Hence, each part is 3 times the size of a part in the 9/12 model.

B) 1/3 times as many

B) 3 times the size

4 0

2 years ago

I will give brainiest to whoever answers correctly !!

schepotkina [342]

Answer:

12,000

Step-by-step explanation:

i believe this would be what she withdrew but if not i'm sorry for giving the wrong answer

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2 years ago

How do you to tell the difference between an ellipse, hyperbola, parabola, or circle if all are in standard form?

NeX [460]

Step-by-step explanation:

General form of a conic section is:

Ax² + Bxy + Cy² + Dx + Ey + F = 0

If B = 0:

Parabola: Either x² or y² term, but not both

Circle: x² and y² have the same coefficient

Ellipse: x² and y² have different positive coefficients

Hyperbola: x² and y² have different signs

Otherwise, look at the discriminant.

If B² − 4AC < 0, then the conic is an ellipse.

If B² − 4AC = 0, then the conic is a parabola.

If B² − 4AC > 0, then the conic is a hyperbola.

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2 years ago

Which graph shows y as a function of x?

anastassius [24]

Choice a.....................

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3 years ago

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